Dentimeter.



PATBNTED JULY 30, 1907.

R. H. MAGY.

DENTIMETER.

APPLIUA'ZION FILED APR.20,1007.

A rm/runs REUBEN HUBERT MACY, OF W EST PALMBEACH, FLORIDA.

D ENTIMETER.

. Specification of LettersPatent.

Application filed April 20,1907. Serial No. 369,260.

Patented July 30, 1907.

' economic and effective instrument, especially adapted for releasing and holding the-ends of a wire when measnring a tooth or a root in crown bridge work.

Another purpose of the invcntion'is to provide an instrument of the character described that willv consist;

oi but two meinbersor sections, and to so construct and combine said members or sections that the ends of a loop of wire may be quickly and conveniently inserted into the instrument and locked thereto. and as speedily and readily released tlnierel'rom.

The invention consists in the novel construction and combination of. the several parts, as will he hereinafter fully set forth and pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, inwhieh similar characters of referenct' indicate corresponding parts in all the figures. 1

Figure 1 is aside elevation of the improved instrument applied to atooth for measuring its circumlen once; and Fig. 2 is a sectional side elevation of a portion of the instrument and a loop of wire hold thereby ready l'oropplication to a tooth, the view being drawn upon an enlarged scale. 1

The instrument consists of a handle it and a sleeve B tl at carried by the handle. The body portion of the handle A is shown circular in cross section and is provnlcd with spiral corrugations ll whereby the handle may be readily grasped and eoi'ivenicutly turned, but the roughened surface 11 ot' the handle may be otherwise l'ormedand the said handle may he made polygonal in cross section if so desired.

A t, the outer end ol' the body portion 10 of the handle A a lixed spindle A is provided, which spindle A is by preference an integral portion of the body it) of the lu.udle. This spindle A comprises an inner extoriorly threaded section 12 which is of lesser diameter than the leaFt. diameter of the body of the handle and a plain. outer section 13 of lesser diameter than the diameter oi the threaded section,12 and at the extreme outer end of the fixed spindle A a head'l i is formed, as is best showniu Fig. 2.

The sleeve ii is open at'its inncr end but its outer end 15 is closed, and the said closed outer end of the sleeve l) is provided with two passages ltinnd -16 located one at each side ol the center, and these passages extend in divergent lines to the interior of the. sleeve ll, as is best shown in Fig. 2. The inner face of the inner portion ol the sleeve l; is provided with a thread 17 so that it may be screwed upon. thetlu'eadcd section 12 of the spindle A and the exterior surface l8 of the said sleelve is milled or otherwise roughened in order to facilitate the handling of the instrument In operation a wire 0 is bent to form loop 19. as is shown in Fig. 2, and the ends of the wire are introduced into the sleeve B through the al'orcsaid passagcsilli' and l6v Beiorethe wire is thus introduced into the sleeve, the sleeve is held in one hand and the handle is turned to the left with the other hand, thus carrying the outer end of the sleeve away from the head oi the spindle A and permitting the ends of the wire to enter the sleeve. When the wire has been properly set; in the sleeve, the handle A is turned to theright until the head 14 oithe spindle is in clamping engagement with the introduced ends of the wire loop v19. The wire loop is thus held iirmly to the instrument and the loop is then passed over the tooth D to be measured, as is shown in Fig. 1., and the entire instrument is turned until the wire 0 is twisted upon itself. as is shown at 20 in Fig. 1, from the connection of the wire with the instrument to the point where the wire is drawn together around the tooth. in

this manner the circumference of the crown, oi the root, or the circumference of any portion of a tooth may be accurately and speedily obtained.

Having thus described my invention, .1 claim as new and desire to secure by Letters Pateut,- I

1. A deutimeter, comprising a handle member, a sleeve closed ut its outer end and lniving screw connections with the handle member. the outer end ol the sleeve being closdil, and provided witlrpassuges for the introduction of the ends of a wire loop, and the outer end of the entering portion of the handle being adapted to closely approach the closed end of the sleeve to conlinc or secure the ends of the wire. h

L. A dentimetcr consisting of a sleeve cl sed illi liS outer end and provided with passages :it, its closed end. and a handle adjustable in the said sl eve, the outer end of the hundle being adapted in one position to closely RIP-I preach the closed end of the sleeve. r I

.l. A dentimeter comprising a handle section having a spindle extension threaded at its lower portion and provided with a head at its outer portion, and a sleeve closed at its outer end and provided with pas 'es to receive the terminals of an open wire loop, the sleeve being interlorly threaded for a poi-lion of its length to engage with the threaded portion or said spindle, the head cooperating with the closed end of the sleeve to clamp the ends of the wire.

In testimony whereof I have signed my name to this specification in the presence of two subscribing; witnesses.

, nnnnnN nnnnnr MACY.

Witnesses Minn-A. Furnivn. 3. it. AN'lll'tiNY, Jr. 

